Billions of galaxies are in the universe, with billions of stars in every galaxy. Could billions of planets be out there too?
The history of UFOs weaves together public fascination, government secrecy and cultural phenomena. Recent news and shifts in the government's stance on UFOs are giving new life to the mystery.
Plus, what's happening in Chad, three months after rebels killed the president, Idriss Déby.
A new nine-page report, requested by Congress, doesn't say what the 144 UFO sightings from 2004 to 2021 are, but does say that the government wants to learn more.
Some UFO sightings appear to demonstrate 'advanced technology'. The Pentagon has confirmed some threaten flight safety, and potentially national security.
Even if aliens exist, are intelligent like humans and interested in making contact with us, what are the chances they'll be close enough for us to hear them screaming their presence into the cosmos?
One in a million or one in ten? Mathematics can help us work out the odds of whether recent sightings of UFOs are really alien spaceships.
Astronomers just measured the largest flare ever from Proxima Centauri, humanity's closest neighboring star. These flares could be bad news for life trying to develop on a planet orbiting the star.
If octopuses simply started evolving a smarter brain, what stops them from ruling over humans? Why has this not happened already? An expert explains what these cephalopods might be capable of.
Words matter, writes an immigration scholar. It is far easier to deny the humanity of an 'alien' than to do so for a 'noncitizen.'
NASA's Mars 2020 mission has arrived and landed the Perseverance Rover on the red planet. The rover's goal is to collect rock and soil samples to be brought back to Earth in the future.
Aliens might want to contact us for the same reasons we are looking for them.
The sequel to 2018's Occupation, this new alien invasion film is overly ambitious, both incomprehensible and shrill.
Scientists are not convinced by the current evidence of UFOs. That doesn't mean that they don't exist. But have Americans' belief in UFOs gone from science to a new religion?
Considering what we know about the key ingredients for life's formation on Earth, here are three explanations for how this process may have occurred on our sister planet.
The internet has allowed pseudoscience to flourish. Artificial intelligence could help steer people away from the bad information.
We asked astronomers: are we alone in the Universe? The answer was surprisingly consistent.
The Conversation33.5 MB (download)
'I think that we will discover life outside of Earth in my lifetime. If not that, then in your lifetime,' one astronomer told us.
Somewhere out there, just maybe, an alien – probably stranger looking than in our wildest imagination – might be pondering this very question.
The Universe is mind-bogglingly large and with the latest technology, the search is only just starting to heat up.
It's established Mars was once a planet with surface-level water. So with multiple MARS missions starting next year, the key to seeking out martian life may instead lie in the contents of its 'dust'.